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Engineering
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Let a, b, c be such that  .If then the value of is

• Option 1)

any even integer

• Option 2)

any odd integer

• Option 3)

any integer

• Option 4)

zero

As we learnt in

Value of determinants of order 3 - -

So n is any odd integer.

Option 1)

any even integer

Incorrect Option

Option 2)

any odd integer

Correct Option

Option 3)

any integer

Incorrect Option

Option 4)

zero

Incorrect Option

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Engineering
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Directions : Questions are Assertion- Reason type questions. Each of these questions contains two statements :

Statement- 1 (Assertion) and Statement - 2 (Reason).

Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select the correct choice.

Question : Let be a  2 x 2 matrix

Statement-1 :

Statement-2 :

• Option 1)

Statement-1 is true,Statement-2 is true; Statement-2 is not a correct explanation for Statement-1

• Option 2)

Statement- 1 is true, Statement-2 is false

• Option 3)

Statement-1 is false, Statement-2 is true

• Option 4)

Statement-1 is true, Statement-2 is true; Statement-2 is correct explanation for Statement-1

As we learnt in

Property of adjoint of A -

- wherein

denotes adjoint of  and    denotes determinant  of  and  is the order of the matrix

Statement 2 is true

Statement 1 is true

Option 1)

Statement-1 is true,Statement-2 is true; Statement-2 is not a correct explanation for Statement-1

Correct Option

Option 2)

Statement- 1 is true, Statement-2 is false

Incorrect Option

Option 3)

Statement-1 is false, Statement-2 is true

Incorrect Option

Option 4)

Statement-1 is true, Statement-2 is true; Statement-2 is correct explanation for Statement-1

Incorrect Option

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